LG Flash Tool LGUP and UpperCut Download latest version

If you own an LG phone and you want to flash LG’s stock firmware on your device or any firmware in kdz and tot format, this guide is for you. Now LG’s firmware comes in “KDZ” file extensions and at times in “TOT” extensions. To flash this firmware, we need the LG Flash Tool for PC and the firmware you plan to flash on your phone.

What is LG Flash Tool (LGUP)

LG Flash Tool has been developed by XDA. The tool can be downloaded freely for Windows PC or tablet. It supports 1000s of models and can flash large 1 GB files. LG Flashing tool is a portable application which can be used without downloading it on the PC, this LG firmware tool supports all new as well as old LG devices, it allows the users to read the entire device related information and it also allows you to flash the stock firmware on LG devices with different chipsets.

The latest LGUP (LG Flash Tool) is now available and the good news is that it supports all Windows versions like XP 7,8.1,8,10. In essence, it is like Odin flash tool for Samsung devices. The LGUP tool comes in handy when you get stuck in a boot loop. In such times you need to flash stock firmware on your device. You can unbrick as well as get out of the boot loop by flashing a stock build compatible with your phone.

Before proceeding users should update USB drivers of their respective Windows PCs and your smartphone should be backed up, and have sufficient battery. Also, USB debugging should be enabled from the Developer options.

Download Latest LG Flash Tool (All versions)

Download Latest LG Flash Tool (All versions)

Download LGUP Tool

LGUP is a Windows tool for flashing stock firmware on LG smartphones. Each device requires unique settings to perform a successful firmware flash.

LGUP LG Firmware Flashing Tool Download Latest version

How to Install .KDZ and .TOT Firmwares on LG Devices

How to use LG Flash Tool to flash Stock Firmware in LG devices

Step 1: You need to download LG flash tool for your Windows PC and extract it to a folder

Step 2: Then download the correct Stock ROM firmware for your LG handset.

Step 3: Now boot your LG device into download mode. To do that, just turn your phone off. Connect it via USB to the PC. Then press and hold both volume buttons until it shows “Download Mode”.

Step 4: Then launch the LG flash tool on your PC. (If your device is not detected, download Uppercut tool & follow usage instructions from below)

Step 5: In the interface select “CDMA” as device type and for the Phone mode select “Diag”. You can use normal flash if you don’t want to wipe data. The CSE Flash option does a clean wipe and install. That is recommended.

Step 6: Now, select KDZ file tab and select the downloaded file.

Step 7: Finally, click on the “OK” button to start the flashing process. Let the procedure get completed and restart your device after it is done.

LG Uppercut Tool

Sometimes LGUP doesn’t identify the connected LG device and you don’t know why, as you have installed all the USB drivers properly. XDA recognized contributor autoprime, came up with a simple solution in the form of Uppercut tool. Just double-click the Uppercut tool and LGUP window will open with your device detected in it. Once your device is detected, you can simply browse to the firmware file and flash it on your device.

Uppercut Download

How to Use Uppercut Tool

Step 1: Download and install the LGUP 1.14 tool on your PC.

Step 2: Connect your device and make sure the device is showing up in the device manager. If you can’t find your device in Device manager, you need to install LG USB Drivers. Uppercut tool can only help if drivers are working properly.

Step 3: Now, download the Uppercut tool zip and extract it. You’ll find the Uppercut.exe file inside the extracted folder.

Step 4: Double-click the Uppercut.exe and this will invoke the LGUP tool on your PC with your device detected.

Step 5: That’s it. You can now continue with firmware flashing on your device.


Reprogramming a mobile device to work with a carrier rather then the intended provider is called flashing of a device. Flashing is often referred for system files whereas installing is referred to normal softwares.

Flashing refers to changing the operating system or firmware on your phone. It erases the entire data in your phone. Flashing may void your phone’s warranty, depending upon the phone, it’s security measures and the software you use for flashing.

1. It is a portable tool
2. It helps to easily flash the firmware
3. It has User-friendly interface
4. Works well on all LG phones
5. It provides the entire information about the device

Follow the below-mentioned steps for the same:

Step 1. Power off your LG device
Step 2. Press and hold your device’s Volume Up button
Step 3. Connect it with your computer using an original USB cable (while holding the Volume up button)
Step 4. Your computer will boot into download mode with the firmware update
Step 5. You can insert that update using LGUP which you can install in your computer as described in the article
Step 6. Now, in 10-15 mins, your phone will be flashed and updated with a new firmware

When you face crashing issues on your LG flash tool, then follow these steps:
Step 1. Download wx.rar file
Step 2. Use 7-zip software to get wx.dll by extracting it from wx.rar
Step 3. Copy the wx.dll file and open C:ProgramDataLGMOBILEAXPhone folder
Step 4. Paste this folder in your device’s folder
Step 5. Now, install KDX firmware using LG flash tool

Unlocking a phone is a process of obtaining a code which unlocks the sim card slot and allows you change the provider’s. Whereas flashing means is reprogramming the device’s internal software codes to work with a carrier rather then its intended provider.

The KDZ/TOT file format used by LG while posting the official firmware which are released by the LG website itself. This file stores the archive that contains updated firmware data and dll file with the entire information on the latest update.

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *

One Comment

  1. hi
    my phone is lg v10 h901 (Under the battery cover) But the rom on the phone now is h900 att ….I want to retrieve the original rum h901 t.mobil